:root{--bg:#030c18;--bg2:#071a2b;--panel:#0a1b30;--panel2:#0d2440;--panel3:#102b49;--text:#f7fbff;--muted:#b9c8dc;--line:#21466f;--gold:#ffb020;--amber:#ffd36b;--blue:#1677ff;--cyan:#18c6c8;--ok:#2fd08a;--danger:#ff6a77;--max:1220px;--shadow:0 22px 70px rgba(0,0,0,.36);--glow:0 0 28px rgba(22,119,255,.22);--radius:22px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 80% 5%,rgba(22,119,255,.12),transparent 28%),linear-gradient(180deg,#020913 0,#061421 30%,#030c18 100%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.58;-webkit-font-smoothing:antialiased;min-height:100vh}.wrap{width:min(var(--max),calc(100% - 34px));margin:auto}a{color:inherit}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;color:#000;padding:10px 12px;z-index:1000;border-radius:8px}.site-header{position:sticky;top:0;z-index:100;background:rgba(3,12,24,.9);backdrop-filter:blur(18px);border-bottom:1px solid rgba(49,105,163,.55);box-shadow:0 10px 38px rgba(0,0,0,.2)}.nav{min-height:76px;display:flex;align-items:center;gap:20px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:1.32rem;font-weight:950;letter-spacing:.02em;white-space:nowrap}.brandmark{width:45px;height:45px;display:block;flex:0 0 auto;background:url('logo.svg') center/contain no-repeat;font-size:0;color:transparent;filter:drop-shadow(0 0 10px rgba(22,119,255,.35))}.brandword{background:linear-gradient(90deg,#fff 0 52%,#ffd15c 52% 100%);-webkit-background-clip:text;background-clip:text;color:transparent}.navlinks{display:flex;align-items:center;gap:9px;margin-left:auto}.navlinks a{text-decoration:none;color:#dbe8f7;font-weight:800;font-size:.9rem;padding:10px 11px;border-radius:11px}.navlinks a:hover,.navlinks a:focus-visible{color:#fff;background:rgba(22,119,255,.12)}.navlinks .fav-link{color:#ffe083}.navlinks .fav-link:before{content:'★ ';color:var(--gold)}.theme-toggle{width:42px;height:42px;border:1px solid #2b527d;border-radius:12px;background:#0d2035;color:#ffd36b;font-size:1.1rem;cursor:pointer}.hero{position:relative;overflow:hidden;padding:70px 0 54px;border-bottom:1px solid #173957;background:radial-gradient(circle at 76% 30%,rgba(22,119,255,.30),transparent 24%),radial-gradient(circle at 89% 62%,rgba(255,176,32,.18),transparent 20%),linear-gradient(135deg,#061425,#071a2b 55%,#06111f)}.hero:before{content:'';position:absolute;width:470px;height:470px;right:-70px;top:40px;border:2px solid rgba(22,119,255,.42);border-radius:50%;box-shadow:0 0 40px rgba(22,119,255,.35),inset 0 0 40px rgba(22,119,255,.18)}.hero:after{content:'%   ÷   ×   +';position:absolute;right:3%;top:34%;font-size:clamp(2.2rem,5vw,5rem);word-spacing:25px;font-weight:950;color:#ffd15c;opacity:.24;transform:rotate(-12deg);text-shadow:0 0 18px #1677ff}.hero .wrap{position:relative;z-index:2}.eyebrow,.kicker{display:inline-flex;align-items:center;border:1px solid rgba(255,194,69,.35);background:rgba(255,176,32,.08);border-radius:999px;padding:8px 13px;color:#ffe08b;font-size:.77rem;font-weight:950;text-transform:uppercase;letter-spacing:.11em;box-shadow:inset 0 0 20px rgba(255,176,32,.04)}.hero h1,.calc-hero h1{font-size:clamp(3.2rem,8.5vw,6.7rem);line-height:.91;letter-spacing:-.065em;margin:23px 0;color:#f9fcff;max-width:850px}.hero h1 em,.calc-hero h1 em{font-style:normal;background:linear-gradient(90deg,#ffdc78,#ffb020);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:none}.hero p{max-width:690px;color:#c6d4e6;font-size:1.08rem}.search{margin:28px 0 10px;max-width:760px;position:relative}.search:after{content:'→';position:absolute;right:9px;top:50%;transform:translateY(-50%);display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,#ffd36b,#ff9d13);color:#071a2b;font-weight:1000}.search input{width:100%;font-size:1.02rem;padding:17px 62px 17px 18px;border:1px solid #2f6397;background:rgba(4,15,28,.72);color:#fff;border-radius:17px;outline:none;box-shadow:0 0 0 1px rgba(22,119,255,.08),0 0 30px rgba(22,119,255,.12)}.search input::placeholder{color:#8197b0}.search input:focus,.field input:focus,.field select:focus{border-color:#338eff;box-shadow:0 0 0 4px rgba(22,119,255,.15),0 0 32px rgba(22,119,255,.13)}.trustrow,.categorybar{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.trustrow span,.pill{border:1px solid #294d72;background:rgba(9,29,50,.78);border-radius:999px;padding:9px 13px;color:#e0ebf7;font-size:.83rem}.pill{text-decoration:none;font-weight:800}.pill:hover{border-color:#ffbf45;color:#ffe69a;box-shadow:0 0 22px rgba(255,176,32,.13)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:30px}.stat{background:linear-gradient(180deg,#0d223b,#09182a);border:1px solid #21476f;border-radius:18px;padding:17px;box-shadow:0 10px 30px rgba(0,0,0,.2)}.stat strong{display:block;color:#ffd36b;font-size:1.4rem}.stat span{color:#aebed0;font-size:.82rem}.section{padding:62px 0}.section.alt{background:linear-gradient(180deg,rgba(10,30,51,.76),rgba(4,14,25,.85));border-top:1px solid #173957;border-bottom:1px solid #173957}.section h2{font-size:clamp(2rem,4vw,3.15rem);letter-spacing:-.04em;margin:0 0 10px;color:#f9fcff}.sectionlead{color:#aebed0;max-width:760px;margin:0 0 24px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.text-button{border:0;background:transparent;color:#7cb8ff;font-weight:850;cursor:pointer;padding:10px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{position:relative;overflow:hidden;display:flex;flex-direction:column;min-height:205px;text-decoration:none;background:linear-gradient(155deg,#0d223b,#081726);border:1px solid #214970;border-radius:20px;padding:21px;transition:.2s transform,.2s border-color,.2s box-shadow;box-shadow:0 8px 24px rgba(0,0,0,.18)}.card:before{content:'';position:absolute;inset:auto -35px -55px auto;width:120px;height:120px;border-radius:50%;background:radial-gradient(circle,rgba(22,119,255,.16),transparent 65%)}.card:hover{transform:translateY(-4px);border-color:#338eff;box-shadow:0 17px 45px rgba(0,0,0,.3),0 0 24px rgba(22,119,255,.12)}.card .cat{color:#6fc9ff;font-size:.71rem;text-transform:uppercase;letter-spacing:.09em;font-weight:950}.card h3{margin:9px 0 8px;font-size:1.17rem;color:#fff}.card p{color:#aebed0;font-size:.91rem;margin:0 0 14px}.go{margin-top:auto;font-weight:900;color:#ffd36b}.compact-grid .card{min-height:155px}.featuregrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.feature{border:1px solid #21476f;background:linear-gradient(160deg,#0c2139,#081727);border-radius:20px;padding:22px;box-shadow:0 9px 28px rgba(0,0,0,.18)}.feature h3{margin:0 0 8px;color:#fff}.feature p{color:#aebed0;margin:0}.calc-hero{position:relative;overflow:hidden;padding:46px 0 30px;background:radial-gradient(circle at 85% 30%,rgba(22,119,255,.17),transparent 25%),linear-gradient(180deg,#061425,#071522);border-bottom:1px solid #173957}.calc-hero:after{content:'÷  ×  +';position:absolute;right:4%;top:25%;font-size:3rem;font-weight:950;color:#1677ff;opacity:.12}.calc-hero .wrap{position:relative;z-index:2}.calc-hero h1{font-size:clamp(2.8rem,7vw,5.6rem);margin-bottom:16px}.calc-hero p{color:#c0ccdb;font-size:1.04rem}.breadcrumbs{font-size:.84rem;color:#92a8c0}.breadcrumbs a{color:#82bdff}.calc-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,.75fr);gap:20px;align-items:start}.tool,.sidebox,.contentbox{background:linear-gradient(160deg,#0c2037,#081827);border:1px solid #214a72;border-radius:22px;box-shadow:var(--shadow)}.tool{padding:26px;position:relative}.tool:before{content:'';position:absolute;inset:0;border-radius:22px;pointer-events:none;box-shadow:inset 0 1px 0 rgba(255,255,255,.035)}.sidebox,.contentbox{padding:22px}.tool h2{margin-top:0;color:#fff}.fields{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.field label{display:block;font-weight:850;font-size:.86rem;margin-bottom:7px;color:#e7f0fa}.field input,.field select{width:100%;background:#061525;border:1px solid #2a5279;color:#f6fbff;border-radius:13px;padding:14px 13px;font-size:1rem;outline:none}.field .unit{font-size:.72rem;color:#8ea5bc;margin-top:5px}.button{min-height:49px;border:1px solid #4c96ff;border-radius:13px;padding:13px 20px;background:linear-gradient(135deg,#0f66e8,#1677ff 58%,#18a7c6);color:#fff;font-weight:950;font-size:1rem;cursor:pointer;margin-top:19px;box-shadow:0 10px 30px rgba(22,119,255,.26)}.button:hover{filter:brightness(1.07)}.result{position:relative;overflow:hidden;margin-top:20px;background:radial-gradient(circle at 90% 15%,rgba(47,208,138,.12),transparent 26%),linear-gradient(135deg,#071a2b,#0b2b4d);border:1px solid #28679e;border-radius:18px;padding:22px;color:#fff;box-shadow:0 0 34px rgba(22,119,255,.12)}.result:after{content:'✓';position:absolute;right:18px;top:18px;width:30px;height:30px;border-radius:50%;background:var(--ok);display:grid;place-items:center;color:#051622;font-weight:950}.result .label{font-size:.73rem;color:#7ee7f0;text-transform:uppercase;letter-spacing:.1em;font-weight:950}.result .big{font-size:clamp(2.1rem,6vw,3.9rem);font-weight:950;letter-spacing:-.05em;line-height:1.08;margin:8px 42px 8px 0;color:#fff}.result .details{color:#cfdeec}.sidebox h3,.contentbox h2,.contentbox h3{margin-top:0;color:#fff}.sidebox p,.contentbox p,.contentbox li{color:#aebed0}.formula{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:#d8ecff;background:#061525;border:1px solid #244b70;border-radius:13px;padding:15px;overflow:auto}.below{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:22px}.related{display:grid;grid-template-columns:repeat(2,1fr);gap:11px}.related a{background:#0a1c30;border:1px solid #21476f;border-radius:14px;padding:14px;text-decoration:none;font-weight:800;color:#e8f2fc}.related a:hover{border-color:#3d8ee0;color:#ffd36b}.notice{font-size:.82rem;color:#8ea5bc;margin-top:13px}.adslot{margin:24px 0;border:1px dashed #294e72;border-radius:14px;padding:12px;text-align:center;color:#7088a0;font-size:.76rem}.empty{display:none;color:#93a7bd;padding:25px 0}.favorite-btn{margin:0 0 18px;border:1px solid #6d5425;background:rgba(255,176,32,.09);color:#ffe08a;border-radius:999px;padding:10px 14px;font-weight:900;cursor:pointer}.favorite-btn[aria-pressed="true"]{background:linear-gradient(135deg,#ffb020,#ffd36b);border-color:#ffd36b;color:#071a2b;box-shadow:0 0 22px rgba(255,176,32,.2)}.footer{border-top:1px solid #173957;margin-top:60px;padding:42px 0 52px;background:#020914;color:#9fb0c3;font-size:.9rem}.footergrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}.footer h3{color:#fff;margin-top:0;display:flex;align-items:center;gap:10px}.footer .brandmark{width:42px;height:42px}.footer a{color:#dce9f6}.legal{max-width:850px;padding:46px 0}.legal h1{font-size:clamp(2.3rem,6vw,4.6rem);letter-spacing:-.055em;line-height:1;color:#fff}.legal h2{margin-top:32px;color:#fff}.legal p,.legal li{color:#aebed0}.timesheet{grid-column:1/-1;overflow-x:auto}.timegrid{display:grid;grid-template-columns:70px 1fr 1fr 1fr;gap:8px;min-width:520px;align-items:center}.timegrid input{width:100%;background:#061525;border:1px solid #2a5279;border-radius:10px;color:#fff;padding:10px}.timegrid .head{font-size:.75rem;color:#91a6bd;font-weight:850;text-transform:uppercase}.micro{font-size:.75rem;color:#8095aa}.category-intro{display:flex;justify-content:space-between;gap:30px;align-items:end}.category-intro p{max-width:680px;color:#aebed0}
/* favourites */.fav-hero{padding:55px 0 28px;background:radial-gradient(circle at 80% 15%,rgba(255,176,32,.13),transparent 26%),linear-gradient(180deg,#061425,#071522);border-bottom:1px solid #173957}.fav-hero h1{font-size:clamp(2.8rem,7vw,5rem);letter-spacing:-.055em;line-height:.95;margin:16px 0}.favourites-empty{border:1px dashed #31587c;background:#081827;border-radius:18px;padding:28px;color:#aebed0}.fav-actions{display:flex;justify-content:flex-end;margin-bottom:16px}.ghost-btn{border:1px solid #31587c;background:#091b2e;color:#dce9f6;border-radius:12px;padding:10px 14px;font-weight:800;cursor:pointer}
/* category visual badges */.categorybar .pill:nth-child(1):before{content:'◷ ';color:#ffd36b}.categorybar .pill:nth-child(2):before{content:'⌂ ';color:#ffd36b}.categorybar .pill:nth-child(3):before{content:'▥ ';color:#ffd36b}.categorybar .pill:nth-child(4):before{content:'£ ';color:#ffd36b}.categorybar .pill:nth-child(5):before{content:'% ';color:#ffd36b}.categorybar .pill:nth-child(6):before{content:'⇄ ';color:#ffd36b}
/* light theme optional */body.light{--text:#142033;--muted:#5f6f82;background:#f6f8fc;color:#142033}body.light .hero,body.light .calc-hero,body.light .fav-hero{background:radial-gradient(circle at 85% 15%,rgba(22,119,255,.12),transparent 28%),linear-gradient(180deg,#fff,#eef5fb)}body.light .hero h1,body.light .calc-hero h1,body.light .fav-hero h1,body.light .section h2,body.light .card h3,body.light .feature h3,body.light .tool h2,body.light .sidebox h3,body.light .contentbox h2,body.light .contentbox h3,body.light .legal h1,body.light .legal h2{color:#071a2b}body.light .hero p,body.light .calc-hero p,body.light .card p,body.light .feature p,body.light .sidebox p,body.light .contentbox p,body.light .contentbox li,body.light .sectionlead{color:#5f6f82}body.light .card,body.light .feature,body.light .tool,body.light .sidebox,body.light .contentbox,body.light .stat{background:#fff;border-color:#d9e5f0}body.light .field input,body.light .field select,body.light .formula,body.light .related a{background:#f7f9fc;color:#142033;border-color:#d4e1ed}body.light .section.alt{background:#eef4fb}body.light .pill{background:#fff;color:#3f5368;border-color:#d7e3ef}
@media(max-width:980px){.navlinks a:nth-of-type(3){display:none}.grid,.featuregrid{grid-template-columns:repeat(2,1fr)}.calc-layout{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr)}.hero:before{right:-240px;opacity:.7}.hero:after{display:none}}
@media(max-width:680px){.wrap{width:min(100% - 28px,var(--max))}.nav{min-height:70px;gap:8px}.brandmark{width:40px;height:40px}.brand{font-size:1.2rem}.navlinks{gap:3px}.navlinks a{padding:8px 7px;font-size:.82rem}.navlinks a.about-link{display:none}.navlinks .fav-link{font-size:0}.navlinks .fav-link:before{content:'★';font-size:1.22rem}.theme-toggle{width:40px;height:40px}.hero{padding:54px 0 42px}.hero h1{font-size:clamp(3.1rem,15vw,5.2rem);max-width:95%}.hero p{font-size:1rem}.grid,.featuregrid,.below{grid-template-columns:1fr}.fields{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.card{min-height:175px}.section{padding:48px 0}.footergrid{grid-template-columns:1fr}.category-intro{align-items:start;flex-direction:column}.calc-hero{padding:38px 0 24px}.calc-hero h1{font-size:clamp(2.8rem,13vw,4.5rem)}.tool{padding:20px}.related{grid-template-columns:1fr}.breadcrumbs{font-size:.78rem}.hero:before{width:320px;height:320px;right:-210px;top:20px}}
@media(max-width:390px){.navlinks a:first-of-type{display:none}.brandword{font-size:1.05rem}.stats{grid-template-columns:1fr}.hero h1{font-size:3.25rem}}